.treeview{
    width: unset;
}

.tree-menu-left{
    position: absolute;
    height: calc(100% - 70px);
    width: calc(17% - 5px);
    background-color: #333;
}

.content-right{
    float: right;
    height: calc(100% - 70px);
    width: 83%;
    padding-top: 1rem;
}